| 摘要 |
<p>The present invention relates to a door lock for a classroom. A door is locked as a locking piece (106) enters a stucking groove (68) included in an outside spindle (38) while the locking piece (106) of a locking member (74) combined through a cam protruding part (104) and a cam concave part (98) with a rotating pipe (72) is stuck in stucking grooves (66, 67) included in a body case (32) and a supporting plate (35) when the rotating pipe (72) having a fastener (48) is rotated by a key bundle (24) of an outer lever (28) by installing the fastener (48) inside the body case (32) of a body assembly (12). Moreover, the door is opened by operation of a latch bolt (14) by rotation of an inner lever (30) in the locking state of the outside, and the fastener (48) is combined with the outer key bundle (24) through a separate rotator (70) combined with the rotating pipe (72). Moreover, the door can be locked inside in an emergency to connect a key bundle (26) with the rotating pipe (72) of the fastener (48) through a connection shaft (56) and a small spindle (64) by installing the key bundle (26) in the inner lever (30).</p> |
